Method for making valves



-June 25, 1929. AMBRLMN 1,718,630

" METHODFOR MAKING VALVES Filed Sept. 29, 1927 A TTORNEYl I BY vPatented June 25, 1929.

' UNITED STATES PATENT OFFICE.

ARCHIE M. BROWN, O15 AKRON, OHIO, ASS; GNOR TO THE FIRE$TONE STEELPRODUCTS COMPANY, OF AKRON, OHIO, A CORPORATION OF OHIO.

METHOD FOR MAKING VALVES.

Application filed September 29, 1927.

tained by the method illustrated in the accompanying drawings anddescribed below. It is to be understood that the invention is notlimited to the specllic term thereo't shown and described.

Of the accompanying drawings,

Figure 1 is a section through a valve body drilled in preparation forthe seat itorn'iing operation;

Figure 2- illustrates the seat forming punch; and

Figure 8 illustrates the completed valve body, the seat forming punchbeing shown in dotted lines.

Referring to the drawings, the valve body 10 is first drilled with thelarge bore 11 and the reduced bore 12 in which the valve insides arehoused, the reduced here being longer than desired in the finished valvebody in which the seat for the insides is to be between the la rge andsmall bores, as indicated at 12-3.

A punch l t is then utilized or a diameter such that it will slidinglylit the large bore, the punch being formed with a reduced stud 15 on itsend to form the air duct 18* through the seat portion 13. The punch 14:forced through bore 11 into engagement with the shoulder at 16 andupsets the metal about bore 12 a gaiust stud 15 to form seat 13. Thevalve body is then ready to receive the usual insides which engage uponseat 13.

It will appear from the foregoing that an exceedingly simple method hasbeen provided for forming valve bodies by which a number of dificult andexpensive seat-forming operations are avoided. It is also apparent thatSerial No. 222,921.

modifications of the invention may be resort ed to without departingfrom the spirit of the invention or the scope of the appended claims.

lVhat is claimed is 1. That method for forming tire valve bodies withinternal seats which comprises forming the valve body with a large boreextending from its base end and a smaller bore adjacent its cap end forreceiving the valve insides with the small bore longer than desired inthe finished valve, and forming a seattor said insides between saidbores by upsetting the metal ol the small bore with a punchsubstantially the diameter of the large bore and formed with a reducedstud on its end, said punch being forced through the large here intoengagement with the shoulder between the bores, the metal being upset tothe point at which the seat is desired and against said stud to form anair duct through said seat.

2. That method of forming tire valve bodies with internal seats whichcomprises forming the valve body with a large bore extending from itsbase end and a smaller bore adjacent its cap end for receiving the valveinsides with the small bore longer than desired in the finished valve,and iorming a seat for said insides between said bores by upsetting themetal of the small here with a punch substantially the diameter of thelarge bore, said punch being forced through the large bore intoengagement with the shoulder between the bores, the metal being upset tothe point at which the seat is desired.

8. That method of forming an internal seat in valve bodies, which methodcomprises forming bores of different diameters in said body with theshoulder between the bores at a point removed from the desired positionof the seat in the small bore, and upsetting the metal about the smallbore from said point to form said seat at said position in the smallbore.

ARCHIE M. BROWN.

